Control mechanism for gas-set valves



Dec. 21,1926], 1,611,416 1 H. N. CHENEY CONTROL MECHANISM FOR GAS, SET VALVES Filed Oct. 24', 1924 4 Sheets-Sheet l www.- H'RBfRT /V. C #54 5).

Dec. 21 192.6. 1,611,416

H. N. CHENEY CONTROL MECHANISM FOR G'AS sm: VALVES Filed Oct. 24. 1924 4 Sheets-Sheefi 2 v lzvvzurom #595507 M 61mm A TTORIVE) Dec. 21 1926. 1,611,416

H.N.CHENEY CONTROL MECHANISM FOR GAS SET VALVES Filed Oct. 24, 1924 4 Sheets-Sheet 3 Dec. 21 1926.

H. N. CHENEY CONTROL MECHANISM FOR GAS SET VALVES Filed Oct. 24, 1924 4 Sheets-Sheet 4 Patented Dec. 21, 1926.

' UNITED STATES 1,611,416 PATENT OFFICE.

' HERBERT N. CHENEY, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO THE GAS MAGHIN- ERY COMPANY, OF CLEVELAND,

CONTROL MECHANISM onro, A oonrona'rron or onro. r03 'eAs-snr VALVES.

a lication filed October 24, 1924. Serial No. 745,669.

means whereby, when the valve mechanism is set for hand operation, that is when the automatically operating mechanism is inoperative, the operator will not be able to effects. reversion to automatic operation while the set is making gas.

.The invention consists of means hereinafter fully described and particularly set forth in the claims.

The annexed drawings and the following description set forth in detail certain means embodying my invention, the disclosed means, however, constituting but one ofthe various mechanical forms in which the rin-.

ciple of the invention may be employe In said annexed drawings: a Figure 1 represents a plan of that part of an automatic valve-operating mechanism to-which my invention is shown applied.

Fig. 2 represents an end, elevation of said mechanism, showing the parts in the position which they occupy while the apparatus is operating automatically.

Fig. 3 represents a view similar to that pf Fig. 2, showing theIparts in a" position in which they are set for hand operation and locked s'o as to prevent the mechanism from being set to operate automatically.

Fig. 4 represents a transverse section taken lfipon the plane indicated by line IV-IV,

The illustrated embodiment of my invention, in so far as concerns the general principlesof operation and construction, is exactly like that of the corresponding parts of-the above-mentioned Plantinga patented device, with such modifications pertinent I thereto as I have shown and described in shown in Fig. 3, the automatically operatit will be noted that locking-out dogs 79 L are referred to, their operation described and that when these'dogs are raised, they render the automatic mechanism inoperative, as isrequired when it is desired to manually control the operation of the gas-set valves i (see lines 37 to 56, page 4 of the patent).

In this instance similar dogs ,7 9 are provided, one for each of the dogs and 71, fixedly securedto the oscillatory bars 78 and 83, Fig. 4, as in said patented device. Bar 78 is, however, provided, with an arm 1, the free end of which articulates with the lower end of a link 2 Whose upper end articulates with an arm 3 forming a part of a hood or basket 4. This hood is provided with brackets 55, Fig. 1, which'are fixed to journal shafts 6-6 mounted in stationary bearings 77 forming a part of the frame of the machine. Secured to one of these shafts 6 is a disk 8, which, with the hood 4, constitute an oscillatory member which, when horizontal, extends over the upper ends of and partly surrounds the handles 45 which are used for manually controlling the valve operations, as described in said atent.

The rods 78 and 83 are eac provided at similar ends, with anarm, 80 and 82 respectively, as in the patented device, and these arms are connected with each other by a link 81, Fig. 2.

The arms 1, 80 and 82 are so positioned that when'therod 2 is pulled upwardly the rods 78 and 83 will be turned so as to turn the dogs 79 upwardly and actuate the dogs 70 and-71 to hold the latter out of operative engagement with the timing disks, as shown in dotted lines in Fig. 4. 1

It will therefore be seen that by raising the hood or basket 4 into an upright position, as

ing mechanism will be rendered inoperative. .Thedisk 8 is providedwith a peripheral notch 9 which, when the hood is upright,

may, be en aged'by the lip 10 of one end of a pivotally ing a peripheral segmental portion 14 of circular form and a cam-segmental peripheral portion 15.

When the pawl-end rests upon the segmental portion 14 the lip 10 may engage the notch 9, and thus lock the hood-in its upright position.

mounted pawl 11, the other end 190 '12 of Wl11Cl1 rests upon a cam-disk. 13 havhandles while the mechanism is operating au- Said portion 14 is of a len th such that it corresponds in length circum erentially with the longest gas-making period which would ever be desired in the cycle, and the length of the cam-segment 15 corresponds with the length of the shortest blast period which would ever be desired in such cycle. The positions of these two portions of the cam disk are such that the valves of the gas apparatus are set for gas-making during a portion of the time the pawl 11 is in engagement with the segment 14 and set for the blast while in engagement with the segment 15 and during the remainder of the engagement with segment 14.

It will hence be seen that the hood cannot be lowered into the horizontal position and hence automatic operation is prevented while the gas making operation is in progress, but may be so lowered while the set is on the blast.

The automatic operation, however, may be restored during the blast, by lowering the hood, as will be understood from the foregoing description.

Let it be assumed that the apparatus is operating automatically and that the hood is down. In this position, the latter extends over the handles 45 which are used for manually controlling the valves during the hand operation of the set, and impedes the manual operation of said handles.

Should it now be desired to effect such operation, the attendant first raises the hood into the position shown in Fig. 3, which exposes the tops or grips of all of the handles so that they may be readily grasped. This act rendersthe' automatically operating part of the mechanism inoperative, as previously described, and should the pawl 11 be in en-' gagement with, the segment 1 10f the cam disk 13, thelip 10 will engage the notch 9 and lock the hood in such position, thus preventing the hood from being lowered and the automatic operation hence is prevented during the gas-making period of the cycle. To lower the hood, .it is hence necessary to turn the timing disks by hand, or wait until they-are turned by the driving mechanism, until the cam-segments 15 lifts the pawl 11 and the latter disengages the disk 8, as shown in Fig. 2, when the hood is then lowered the mechanism reverts to the automatic control of the valves. 1

By having the hood normally above, and as shown, partly enclosing the handle, the attendant is reminded not to manipulate said tomatically.

What I claim is: 1. In a valve operating device, the combination of a plurality of valve-actuating means; a plurality of automatically operated means adapted to render said actuating means operative and inoperative; mechanism erated means simultaneously inoperative;

means for lockingsuch mechanism in its operative position; and means for automatically actuating sald means to assume its unlocking position.

2. In a valve 0 erating device, the combi nation of means or automatically operating a plurality of valves in a given predetermined cycle; mechanism for simultaneously rendering all of said actuating means inoperative; means for locking said mechanism in its operative position; and means operating throughout a part only of said cycle to automatically actuate said locking means to assume its unlocking position.

1 3. In a valve operating device, the combination of means for automatically operating the valves; means for manually controlling the operation of said valves; means for rendering said automatic means inoperative fect such inopcrativeness; said manually op' erable member when the locking means are in inoperative position,being associated with said manually operative controlling means so to impede their operation.

4. In valve operating device, the combination of means for automatically operating the valves; handles for manually controlling the operation of said valves; means for rendering said automatic means inoperative and including a manually movable hood; and means for locking the means which effect such inoperativeness; said hood when the locking means are in an inoperative position being in proximity to said handles.

5. In a valve operating device, the combination of means for automatic'all operating said valves and including a plura ity of timing disks and dogs controlled thereby, said dogs controlling the actuation of said valves; means for simultaneously actuating said dogs to disengage said disks; a pawl adapted to engage said last-named means whereby engaging position; a shaft upon which said disks are fixedly mounted; and a cam fixed to said. shaft and adapted to periodically engage said pawl to disengage same from said dog-disengaging means.

7. In a valve operating device, the combiand a device for locking the means which effect such inope-rativeness; the last-named means being inoperative whenthe said movablle member is in position over said handle en s.-

8. In a valve operating device, the combination of a plurality of timing disks; a plurality of handles formanually controlling the operation of said valves; a'cam rotatable synchronously with said timing disks; a pawl ada ted to be oscillated by said cam; a mem er including a hood adapted to be moved over the ends of said handles and when removed from over said handles tobe engaged by said pawl so as to be locked in said described position; and means connected with .said member adapted to render said disks inoperative; such last-named means being operative when pawl is in engagement with said member.

9. In a valve operating device, the combination of a plurality of timing -disks; a shaft upon which said disks are fixedly mounted;

a plurality of handles for manually controlling the operation of said valves; a cam fixedly mounted upon said shaft; a pawl havmg one end engaging said cam; an oscillatory member including a hood and a disk, 4

the latter being provided with a circumferential notch; means for rendering the automatic valve-operating means inoperative; and means connecting said member with the means for rendering the automatic valve-operating means inoperative; and arranged'so as to render the latter operative when said member is lifted; said hood adapted to nor mally project over said handles; said notch being located so as to engage the other end of said pawl when said hood is lifted and the fii'stmamed end of said pawlis out of engagement with said cam.

Signed by me this twenty first day of October, 1924.

HERBERT N. CHENEY. 

